Synonyms of adverse

Adjective

1. adverse, inauspicious, untoward, unfavorable (vs. favorable), unfavourable

usage: contrary to your interests or welfare; "adverse circumstances"; "made a place for themselves under the most untoward conditions"

2. adverse, contrary, unfavorable (vs. favorable), unfavourable

usage: in an opposing direction; "adverse currents"; "a contrary wind"

Definition and meaning of adverse (Dictionary)